First chapter of a multi-part 1950s era peep-show called "The Nude Dude". Filmed outdoors on a Western set with a shapely cowgirl wearing only a hat and a strategically placed gun belt. This was made to be seen in a coin-operated machine with a viewing slot. At the end of each chapter one has to drop another dime to continue the story. In the days before full-length porn films were shown in theaters, these were set up in adult bookstores.
The unknown model seen here is made up to look like then-famous stripper Candy Barr who wore a similar cowgirl costume.